This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $243 fare is the cheapest current round-trip from London (LHR) to MAD on British Airways flight BA456, departing 2026-07-18 at 06:15 with return on 2026-07-20.

Clicking "Book this flight" opens Kiwi.com with this exact flight pre-filtered — same airline, same dates, same passenger count.